<template>
    <div>
        <!-- 面包屑 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片区域 -->
        <el-card>
            <!-- 工具栏区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <!-- 搜索框 -->
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <!-- 添加商品按钮 -->
                    <el-button type="primary" @click="goAddGoodsPage">添加商品</el-button>
                </el-col>
            </el-row>
            <!-- 表格区域 -->
            <el-table :data="goodlist" border stripe>
              <el-table-column type="index"></el-table-column>
              <el-table-column label="商品名称" prop="goods_name"></el-table-column>
              <el-table-column label="商品价格（元）" prop="goods_price"  width="105px"></el-table-column>
              <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
              <el-table-column label="创建时间" prop="add_time" width="140px">
                  <template slot-scope="scope">
                      {{scope.row.add_time | dateFormat}}
                  </template>
              </el-table-column>
              <el-table-column label="操作" width="130px">
                  <template slot-scope="scope">
                      <el-button size="mini" type="primary" icon="el-icon-edit"></el-button>
                      <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeById(scope.row.goods_id)"></el-button>
                  </template>
              </el-table-column>
            </el-table>
            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[5, 10, 15, 20]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total" background>
            </el-pagination>
        </el-card>
    </div>
</template>

<script>
export default {
    data () {
        return {
            // 查询参数
            queryInfo: {
                query: '',
                pagenum: 1,
                pagesize: 10
            },
            // 商品列表数组
            goodlist: [],
            // 总数据数
            total: 0
        }
    },
    created () {
        // 加载页面获取商品列表
        this.getGoodsList()
    },
    methods: {
        // 获取商品列表
        async getGoodsList () {
            // 查询商品列表数据
            const { data: res } = await this.$http.get('goods', {
                params: this.queryInfo
            })
            if (res.meta.status !== 200) return this.$msg.error('获取商品列表失败')
            this.goodlist = res.data.goods
            this.total = res.data.total
        },
        // pagesize 改变事件
        handleSizeChange (newPageSize) {
            this.queryInfo.pagesize = newPageSize
            this.getGoodsList()
        },
        // pagenum 改变事件
        handleCurrentChange (newPageNum) {
            this.queryInfo.pagenum = newPageNum
            this.getGoodsList()
        },
        // 删除商品
        async removeById (id) {
            const confirmResut = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            if (confirmResut !== 'confirm') {
                return this.$msg.info('已取消是删除操作')
            }
            // 删除操作
            const { data: res } = await this.$http.delete(`goods/${id}`)
            if (res.meta.status !== 200) {
                return this.$msg.error('删除商品失败')
            }
            this.$msg.success('删除商品成功')
            this.getGoodsList()
        },
        // 跳转到添加商品页面
        goAddGoodsPage () {
            this.$router.push('/goods/add')
        }
    }
}
</script>

<style lang="less" scoped>

</style>
